Home / 21,280.66-29,367.04-11,720.37

Finding the Fourth Proportional to 21,280.66, 29,367.04 and 11,720.37

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Solution

The fourth proportional to 21,280.66, 29,367.04 and 11,720.37 is: 16,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.66 : 29,367.04 = 11,720.37 : x
  2. Step 2: Convert to fraction form
    21,280.66/29,367.04 = 11,720.37/x
  3. Step 3: Cross multiply
    21,280.66x = 29,367.04 × 11,720.37
  4. Step 4: Simplify right side
    21,280.66x = 344,192,512.22
  5. Step 5: Solve for x
    x = 344,192,512.22/21,280.66
  6. Step 6: Final answer
    x = 16,173.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.